This is the one that I make every year and it never fails, plus it's fun to watch the mixture bubble:
100g sugar
165g golden syrup
1.5 tsp ground ginger
1 tsp allspice
1 tsp ground cinnamon
1 tsp ground cloves
2 tsp bicarb
125g butter or marg, cut into chunks
1 medium egg, beaten
525g plain flour
Preheat oven to 170C/325F/Gas 3. Bring first 6 ingredients to boil in 3 litre saucepan over medium heat, stirring occasionally. Remove saucepan from heat; stir in bicarb (mixture will foam in pan). Stir in butter until melted. Using fork, stir in egg, then flour.
Knead dough on floured surface until thoroughly mixed. Divide in half. Wrap half in cling film and set aside. Using floured rolling pin, roll out remaining half of dough slightly less than 5mm thick. With floured cutters, cut dough into as many biscuits as possible. Place on ungreased large baking tray 2-3cm apart.
Bake for 12 mins or until edges start to brown, remove to wire rack to cool.